RAO, M.H. et al. 2021. Efficacy evaluation of herbal preparations and antioxidants on the growth, immunity, antioxidant status and Escherichia coli counts of broilers under heat stress. The Indian Journal of Animal Sciences. 91, 8 (Sep. 2021), 660–663. DOI:https://doi.org/10.56093/ijans.v91i8.115926.